Lens assembly



FIG. 1 is a front perspective view of a lens assembly showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof, the left side being a mirror image; and,

FIG. 7 is a front elevational view thereof. 

The ornamental design for a lens assembly, as shown and described. 